An old earthen dam displayed signs of seepage. One state agency wanted to breach and rebuild it immediately, and another agency wanted to repair it. RETTEW was tasked with detecting...
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An engineer was investigating whether a homeowner’s insurance policy would cover damages to their property due to a sinkhole. To provide confident detection of potential subsurface features and properties associated...
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A church was concerned that its walled cemetery excluded some very old unmarked graves, likely containing wooden caskets, given their age. To resolve this uncertainty, RETTEW conducted a ground penetrating...
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A solar farm was expanding onto a hill where a limestone rock outcrop was observed. This raised concerns about shallow rock that could impede installation of the driven rods that...
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RETTEW’s Geophysics team recently assisted a client with a tunneling project. The tunnel path was at a depth at which surface geophysics could not resolve potential small zones of concern,...
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Gasoline that spills on a pervious surface or leaks from an underground storage tank will infiltrate downward until it encounters the groundwater table. Since gasoline is less dense than water,...
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Earthquake-resistant construction is expensive, especially in a place like the New York metropolitan area. A health care client was looking for the most cost-effective design for a critical care facility...
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A growing landfill required constant monitoring along its periphery to ensure aging liners and containment systems were functioning as designed. New monitoring wells were needed in key locations at proposed...
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Our client experienced poor surface drainage and subsidence along a roadway in central Pennsylvania. These occurrences made road conditions dangerous. RETTEW/Enviroscan’s geophysics team surveyed the terrain to locate the source...
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